{
  "abstract": "We report on the utilization of a low-damage e-beam NiO$_x$ deposition process to realize field-plated heterojunction diodes (FP-HJDs) on (010) $β$-Ga$_2$O$_3$ films with high critical breakdown field strengths beyond 4 MV/cm and power figure of merits (PFOM) of >1 GW/cm$^2$. Diodes were fabricated on a 2.67 $\\times$ 10$^{16}$ cm$^{-3}$ intentionally doped 6.2 $μ$m thick epitaxial layer grown by metalorganic chemical vapor deposition (MOCVD) on a conductive Sn-doped $β$-Ga$_2$O$_3$ (010) substrate using TMGa, O$_2$, Ar carrier gas, and SiH$_4$ as the silicon dopant source. The mesa etched FP-HJD devices utilized a thin 7 nm e-beam NiO$_x$ interlayer before the sputtered NiO$_x$ layers to eliminate the effects of sputter-induced ion damage on the (010) epilayers. Current-Voltage measurements resulted in a forward current density of 700 A/cm$^2$ at 4 V, HJD ideality factor of 1.29, a V$_{bi}$ of 2 V, rectification ratio of 10$^{11}$, and a differential specific on resistance (R$_{on,sp}$) value of 2.36 m$Ω$ $\\times$ cm$^2$. Breakdown of the (010) FP-HJDs was 1.64 kV, leading to a parallel plane electric field at breakdown (E$_{||,max}$) of 4.02 MV/cm and a PFOM of 1.14 GW/cm$^2$, which is a state-of-the-art result for diodes on MOCVD-grown (010) drift layers.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.04655",
  "author_total": 6,
  "authors": [
    {
      "name": "Carl Peterson"
    },
    {
      "name": "Yizheng Liu"
    },
    {
      "name": "Chinmoy Nath Saha"
    },
    {
      "name": "Rachel Kahler"
    },
    {
      "name": "Akhila Mattapalli"
    },
    {
      "name": "Sriram Krishnamoorthy"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c6c28darj3rm5.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.04655",
  "fulltext_url": null,
  "id": "c6c28darj3rm5",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.04655",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "physics.app-ph"
    ],
    [
      "openalex",
      "2504|Ga2O3 and related materials"
    ]
  ],
  "openalex": "W7211896346",
  "pdf_url": "https://arxiv.org/pdf/2609.04655",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c6c28darj3rm5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:14Z",
      "native_id": "2609.04655",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.04655"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "4 MV/cm (010) $β$-Ga$_2$O$_3$ Heterojunction Diodes Realized by Low-Damage e-Beam NiO$_x$ Interlayers",
  "title_text": "4 MV/cm (010) β-Ga_2O_3 Heterojunction Diodes Realized by Low-Damage e-Beam NiO_x Interlayers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:14Z",
  "url": "https://research.draconitic.com/paper/c6c28darj3rm5",
  "venue": "arXiv",
  "versions": []
}